Home / 151,342.75-208,853-87,717.45

Finding the Fourth Proportional to 151,342.75, 208,853 and 87,717.45

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Solution

The fourth proportional to 151,342.75, 208,853 and 87,717.45 is: 121,050.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,342.75 : 208,853 = 87,717.45 : x
  2. Step 2: Convert to fraction form
    151,342.75/208,853 = 87,717.45/x
  3. Step 3: Cross multiply
    151,342.75x = 208,853 × 87,717.45
  4. Step 4: Simplify right side
    151,342.75x = 18,320,052,584.85
  5. Step 5: Solve for x
    x = 18,320,052,584.85/151,342.75
  6. Step 6: Final answer
    x = 121,050.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.